How To Fix WO828 - Error in lock management

SAP Error Message - Details

• Message type: E = Error

• Message class: WO - WF: Messages for Workflow Wizards

• Message number: 828

• Message text: Error in lock management

What causes this issue?

An error occurred in the lock management.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Try to execute the operation again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WO828 - Error in lock management ?

  Certainly! Here's a detailed explanation regarding the SAP error message WO828 - Error in lock management:
  
  SAP Error Message: WO828 - Error in lock management
  
  1. Cause
  The error WO828 typically occurs when there is a problem with the lock management system in SAP. Lock management is used to prevent simultaneous access to the same data by multiple users or processes, ensuring data consistency and integrity.
  Common causes include:
  
  Lock table overflow: The SAP lock table (which holds all current locks) is full or nearly full, so new locks cannot be created.
  Lock entry corruption: There might be corrupted or inconsistent lock entries.
  Deadlocks or lock wait timeouts: Processes waiting indefinitely for locks held by others.
  Improper lock handling in custom programs: Custom developments or enhancements that do not properly release locks.
  System performance issues: High system load or performance bottlenecks causing delays in lock processing.
  Database issues: Problems at the database level affecting lock management.
  
  
  2. Solution
  Step-by-step approach to resolve WO828:
  
  
  Check the lock table status:
  
  Use transaction SM12 to view and analyze current locks.
  Identify if there are many locks or locks that are not released.
  Delete unnecessary or stale locks if safe to do so.
  
  
  
  Increase lock table size:
  
  If the lock table is full, increase its size parameter.
  Parameter to check/change: enqueue/table_size (in transaction RZ11).
  Increase the value carefully and monitor system behavior.
  
  
  
  Analyze and fix custom code:
  
  Review any custom programs or user exits that use lock objects.
  Ensure locks are properly set and released.
  Avoid long lock holding times.
  
  
  
  Check for deadlocks or long waits:
  
  Use transaction SM12 and SM21 (system log) to identify deadlocks or lock wait issues.
  Analyze and resolve the root cause of deadlocks.
  
  
  
  System performance tuning:
  
  Check system performance and database health.
  Resolve any bottlenecks that might delay lock processing.
  
  
  
  Apply SAP Notes:
  
  Search for relevant SAP Notes related to WO828 or lock management issues.
  Apply recommended patches or corrections.
  
  
  
  Restart enqueue server (if necessary):
  
  As a last resort, restarting the enqueue server (which manages locks) can clear lock issues.
  Use transaction SM12 or OS commands to restart enqueue service.
  Note: This can impact system availability, so plan accordingly.
  
  
  
  
  3. Related Information
  
  Transaction SM12: Display and manage lock entries.
  Transaction SM21: System log for error and warning messages.
  Transaction ST22: Check for dumps related to lock issues.
  Parameter enqueue/table_size: Controls the size of the lock table.
  Enqueue Server: The SAP component responsible for lock management.
  SAP Notes: Search SAP Support Portal for notes related to WO828 or enqueue errors.
  Lock Objects: ABAP objects used to lock database entries.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WO828 - Error in lock management
  
  
  Cause
  Lock table full, corrupted locks, deadlocks, improper lock handling, system issues
  
  
  Solution
  Check/delete locks (SM12), increase lock table size, fix custom code, analyze deadlocks, tune system, restart enqueue server if needed
  
  
  Tools
  SM12, SM21, ST22, RZ11 (parameter maintenance)
  
  
  Related Info
  Enqueue server, lock objects, SAP Notes
  
  
  
  
  If you provide more context (e.g., when the error occurs, system logs, or custom code involved), I can help with a more specific diagnosis or solution.